Responses of channel catfish (Ictalurus punctatus) swim-up fry to dietary calcium in soft and hard water.

@article{Scarpa1993ResponsesOC,
  title={Responses of channel catfish (Ictalurus punctatus) swim-up fry to dietary calcium in soft and hard water.},
  author={John J Scarpa and Delbert Monroe Gatlin},
  journal={Comparative biochemistry and physiology. Comparative physiology},
  year={1993},
  volume={106 4},
  pages={803-8}
}
1. Responses of channel catfish (Ictalurus punctatus) swim-up fry to dietary calcium in soft (< 1 mg/l as CaCO3) and hard (> 100 mg/l as CaCO3) water were determined by feeding purified egg-white diets containing 0, 0.5, 1.0, or 2.0% calcium from CaCO3 for 8 weeks. 2. Catfish fry fed the basal diet (0.03% Ca) in hard and soft water had lower whole-body ash and whole-body calcium concentrations but higher weight gain and survival than those fed calcium-supplemented diets. 3. Fry in soft water… CONTINUE READING